| Hardenburg Höhenburg | |
| Built: | 1205/1214 |
| Type: | hill castle |
| Site Area: | 180mxx90mm (590feetxx300feetm) |
| Condition: | Ruin, partially reconstructed |
| Location: | Bad Dürkheim-Hardenburg |
| Occupants: | Counts |
| Coordinates: | 49.4622°N 8.1217°W |
| Map Type: | Rhineland-Palatinate#Germany |
| Code: | DE-RP |
The Hardenburg on the eastern edge of the Palatinate Forest near the Rhineland-Palatinate town of Bad Dürkheim is even as a ruin one of the mightiest castles of Palatinate.